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111 The era of big data gives birth to urban transformation, and digital technology helps
Release Date:
2022-01-19 15:15
What is big data? In fact, it is very simple. Big data is actually a huge amount of data. These huge amounts of data come from data generated at any time around the world. In the era of big data, any tiny data may produce incredible value. Big data has 4 characteristics, namely: Volume (a lot), Variety (variety), Velocity (high speed), Value (value), generally we call it 4V.
The so-called 4V, specifically refers to the following four points:
1. a lot. The characteristics of big data are firstly reflected as "big". From the early Map3 era, a small MB-level Map3 can meet the needs of many people. However, with the passage of time, the storage unit has changed from GB to TB in the past, and even The current PB, EB level. With the rapid development of information technology, data began to grow explosively. Social networks (Weibo, Twitter, Facebook), mobile networks, various intelligent tools, service tools, etc., have become sources of data. Taobao's nearly 400 million members generate about 20TB of commodity transaction data every day; Facebook's about 1 billion users generate more than 300TB of log data every day. Intelligent algorithms, powerful data processing platforms and new data processing technologies are urgently needed to count, analyze, predict and process such large-scale data in real time.
2. Diverse. A wide range of data sources determines the diversity of big data forms. Any form of data can play a role. At present, the most widely used recommendation system is Taobao, NetEase Cloud Music, Toutiao, etc. These platforms will analyze the user's log data to further recommend the user's favorite things. Log data is clearly structured data, and some data are not clearly structured, such as pictures, audio, video, etc. These data have weak causal relationships and need to be manually annotated.
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